5
What is an embolus? A thrombus that breaks away and floats freely in the bloodstream that can later clog vessels in critical areas such as the brain.

6
What is RhoGAM? The immune serum used to prevent maternal sensitization to Rh antigens.

7
Describe WBCs (leukocytes): they use diapedesis to move in and out of blood vessels they locate areas of tissue damage through chemotaxis they move by ameboid motion they account for less than 1 percent of total blood volume